El País is still reporting that travel can resume on Monday and that an official announcement will be made on Saturday. Unfortunately, it also says the final details have not yet been worked out. As they say in the military, stand by to stand by.
https://english.elpais.com/economy_and_business/2021-06-04/spain-to-welcome-global-travelers-from-next-week-but-they-must-have-been-vaccinated-14-days-previously.html
The article says: “From Monday onward, passengers who have been vaccinated against Covid-19 will be able to enter Spain, no matter which part of the world they are traveling from. That was the announcement made by the prime minister, Pedro Sánchez, on May 21 at the Fitur tourism fair in Madrid. But the details of the measure are still yet to be released.
However, according to a range of government sources, among the conditions for entry into the country for travelers from outside the European Union will be the need to have been vaccinated 14 days before arrival, and to have received both doses of the vaccine in question in order to have full protection – or just the one necessary shot in the case of the Janssen medication.
The full order is due to be released on Saturday in the Official State Gazette (BOE), according to the same sources, and will enter into force on Monday as had been announced. The text is being prepared by the Health and Interior ministries, which are in charge of healthcare controls and the country’s borders. Late on Thursday, the document was still yet to be finalized.“
For those from the UK the news is the same as it was the other day.
“Meanwhile, the United Kingdom on Thursday opted to keep all European Union countries, including Spain, on its amber list for travel. The British government will also take Portugal off its green list and add it to the amber one. The new list will go into effect in a week. The move represents a blow for the UK tourism industry, which had been hoping for more flexible rules. Despite hopes that Spain’s Canary and Balearic Islands might be placed on the green list, the UK authorities opted not to make that change for now. “